<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    设计原型是为了
</body>
<script>
    function MyEnglishname() {
        this.run = function () { };
    }
    var obj1 = new MyEnglishname();
    var obj2 = new MyEnglishname();
    console.log(obj1.run, obj2.run, "obj1.run===obj2.run", obj1.run === obj2.run); //false

</script>

</html>